Estimation of common-mode EMI caused by a signal line in the vicinity of ground edge on a PCB

Tetshushi Watanabe, Osami Wada, Yoshitaka Toyota, Ryuji Koga

Research output: Chapter in Book/Report/Conference proceedingConference contribution

10 Citations (Scopus)

Abstract

The authors have developed an estimation method of common mode radiation from a PCB. A parameter named 'current division factor' explains a generation mechanism of the common mode. Rigorous analysis, instead of rough approximation, is required to calculate the factor for an asymmetric structure. A 2-dimentional static electric field analysis by the boundary element method (BEM) is applied to this calculation, which requires less time than 3-dimentional simulations. EMI increases when the signal line comes close to the edge of ground pattern. The effect is evaluated with the simulation of the factor. The estimation agrees well with measurement within 1 dB.

Original languageEnglish
Title of host publicationIEEE International Symposium on Electromagnetic Compatibility
Pages113-118
Number of pages6
Volume1
Publication statusPublished - 2002
Event2002 IEEE International Symposium on Electromagnetic Compatibility - Minneapolis, MN, United States
Duration: Aug 19 2002Aug 23 2002

Other

Other2002 IEEE International Symposium on Electromagnetic Compatibility
CountryUnited States
CityMinneapolis, MN
Period8/19/028/23/02

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Keywords

  • Boundary element method
  • Common mode
  • Current division factor
  • EMI
  • Ground plane
  • Printed circuit board

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Watanabe, T., Wada, O., Toyota, Y., & Koga, R. (2002). Estimation of common-mode EMI caused by a signal line in the vicinity of ground edge on a PCB. In IEEE International Symposium on Electromagnetic Compatibility (Vol. 1, pp. 113-118)